Is the OST available anywhere as FLAC? Currently on GOG, it is only available as MP3s.

Occasionally it will pop up where some one has ripped their CD to FLAC, unfortunately there isn't much benefit, even with a good CD to FLAC rip, because of the limited quality of the audio tracks of the CD itself.

Atari and Nightdive might release something when they release Blood on the KEX engine if they have access to the original analog recordings that were composed for Blood, but that's a big "if".